IOS android 1px边框

.block h3:after {

1. content: "";
2. position: absolute;
3. bottom: 0px;
4. left: 0px;
5.  100%;
6. border-bottom: 1px solid #ddd;
7. -webkit-transform: scaleY(.5);
8. -webkit-transform-origin: 0 0;

}

 

 

.block h3:after {
content: "";
position: absolute;
bottom: 0px;
left: 0px;
100%;
border-bottom: 1px solid #ddd;
-webkit-transform: scaleY(.5);
-webkit-transform-origin: 0 0;
}